My experience is that the iPhone can drain serious amounts of battery power if it's constantly looking for a signal and not finding one ...

Here's my theory: when you're on the bus, I'd wager you're going through areas of spotty cellular coverage and the phone is using up battery energy looking for something to lock onto. I'm going to guess coverage at school and at home is better and that's why the battery usage stabilizes at those locations. That would also account for why it stabilizes when on the bus in Airplane mode, too =)

When riding the bus next time, try to notice if you get a lot of weak signals or "no service" indicators. If so, then that's probably the culprit ...

My experience is that the iPhone can drain serious amounts of battery power if it's constantly looking for a signal and not finding one ...

Here's my theory: when you're on the bus, I'd wager you're going through areas of spotty cellular coverage and the phone is using up battery energy looking for something to lock onto. I'm going to guess coverage at school and at home is better and that's why the battery usage stabilizes at those locations. That would also account for why it stabilizes when on the bus in Airplane mode, too =)

When riding the bus next time, try to notice if you get a lot of weak signals or "no service" indicators. If so, then that's probably the culprit ...

It's not just the iPhone. My lowly LG dumb phone exhausts the battery when it has to search for a cell signal, too.

The thing is it DOESN'T stabilize anywhere unless I turn airplane mode on. And reboot, everything is off. I have the pictures I just haven't gotten around to uploading them somewhere yet. It'll have to wait till I finish downloading this public beta of photoshop CS6.

It just started doing it this week.. And another thing, why is it so hot?

The first iPhone I got lost its charge seemingly fast. I searched the internet to make sure I was following all the suggestions to prolong life of the battery. It also got very warm. I finally took it back to =Apple store= expecting them to put a new battery in the thing.

They gave me a new iPhone. I later sold it on Craig's List when the newer one came out.

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